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OpenAI Blog 9 months ago 5
Doppel developed an AI defense system using GPT-5 and reinforcement fine-tuning to identify and block deepfake and impersonation attacks. The system reduces analyst workload by 80% and cuts response times from hours to minutes. Organizations can now contain attacks faster, reducing the window for spreading misinformation or fraudulent content.
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3 August 2026
OpenAI's preview of Astra, a model capable of solving decade-old mathematical problems using just $2,000 in compute, represents the most striking development yet in AI's shift from pattern-matching toward genuine discovery. But the week's real narrative runs deeper: as frontier models proliferate—DeepSeek's V4-Flash outperforming its flagship through better post-training, Alibaba's Qwen3.8-Max hitting 2.4 trillion parameters, Sakana AI's Namazu bringing Japanese-specialized reasoning to enterprise APIs—the axis of competition has moved decisively from raw capability to deployment, trust, and economic defensibility.
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